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Hydroxylbenyacarite, (H2O)2Mn2(Ti2Fe)(PO4)4[O(OH)](H2O)10⋅4H2O, a new paulkerrite-group mineral, from the El Criollo mine, Cordoba Province, Argentina.

Published online by Cambridge University Press:  19 March 2024

Rupert Hochleitner Open the ORCID record for Rupert Hochleitner [Opens in a new window] ,
Christian Rewitzer ,
Ian E. Grey Open the ORCID record for Ian E. Grey [Opens in a new window] ,
Anthony R. Kampf Open the ORCID record for Anthony R. Kampf [Opens in a new window] ,
Colin M. MacRae ,
Robert W. Gable  and
William G. Mumme
Rupert Hochleitner
Affiliation:
Mineralogical State Collection (SNSB), Theresienstrasse 41, 80333, München, Germany
Christian Rewitzer
Affiliation:
Independent researcher, Furth im Wald, Germany
Ian E. Grey*
Affiliation:
CSIRO Mineral Resources, Private Bag 10, Clayton South, Victoria 3169, Australia
Anthony R. Kampf
Affiliation:
Mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA
Colin M. MacRae
Affiliation:
CSIRO Mineral Resources, Private Bag 10, Clayton South, Victoria 3169, Australia
Robert W. Gable
Affiliation:
School of Chemistry, University of Melbourne, Parkville, Victoria 3010, Australia
William G. Mumme
Affiliation:
CSIRO Mineral Resources, Private Bag 10, Clayton South, Victoria 3169, Australia
*
Corresponding author: Ian E. Grey; Email: ian.grey@csiro.au
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Abstract

Hydroxylbenyacarite, (H2O)2Mn2(Ti2Fe)(PO4)4[O(OH)](H2O)10⋅4H2O, is a new paulkerrite-group mineral from the El Criollo mine, Cordoba Province, Argentina (IMA2023–079). It was found in specimens of altered triplite, in association with bermanite, phosphosiderite, quartz, strengite and manganese oxides.

Hydroxylbenyacarite occurs as light greenish-yellow rhombic tablets with dimensions of typically 20 to 50 μm, occasionally to 400 μm. The crystals are flattened on {010}, slightly elongated on [001] and bounded by the {111} and {010} forms. The calculated density is 2.32 g cm–3. Optically, hydroxylbenyacarite crystals are biaxial (+), with α = 1.608(3), β = 1.624(3), γ = 1.642(3) (measured in white light) and 2V(meas.) = 88(2)°. The calculated 2V is 87.5°. The empirical formula is Ca0.06 A[K0.46(H2O)0.88□0.66]Σ2.00 M1(Mn1.52Mg0.02Fe2+0.35□0.11)Σ2.00 M2+M3(Fe3+1.21Al0.02Ti1.77)Σ3.00(PO4)4 X[F0.16(OH)0.70O1.14]Σ2.00(H2O)10⋅3.77H2O.

The average crystal structure for hydroxylbenyacarite has space group Pbca and unit cell parameters a = 10.5500(3) Å, b =20.7248(5) Å, c = 12.5023(3) Å, V = 2733.58(12) Å3 and Z = 4. It was refined using single-crystal data to wRobs = 0.074 for 2611 reflections with I > 3σ(I). The crystal structure contains corner-connected linear trimers of Ti-centred octahedra that share corners with PO4 tetrahedra to form 10-member rings parallel to (010). K+ cations and water molecules are located in interstitial sites within the rings. Additional corner-sharing of the PO4 tetrahedra with MnO2(H2O)4 octahedra occurs along [010] to complete the 3D framework structure. A new eight-coordinated interstitial site, previously unreported for paulkerrite-group minerals, is occupied by Ca2+ cations. Weak diffuse diffraction spots in reconstructed precession images for hydroxylbenyacarite violate the a and b glide plane extinctions for Pbca and are consistent with local, unit-cell-scale regions of monoclinic, P21/c structure, in which ordering of the interstitial K+ and Ca2+ cations occurs.

Keywords

hydroxylbenyacaritenew mineral from Argentinacrystal structurepaulkerrite-group member
Type
Article
Information
Mineralogical Magazine , First View , pp. 1 - 8
Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press on behalf of The Mineralogical Society of the United Kingdom and Ireland

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Footnotes

Associate Editor: Daniel Atencio

References

Aksenov, S.M., Charkin, D.O., Banaru, A.M., Banaru, D.A., Volkov, S.N., Deineko, D.V., Kuznetsov, A.N., Rastsvetaeva, R.K., Chukanov, N.K., Shkurskii, B.B. and Yamnova, N.A. (2023) Modularity, polytypism, topology, and complexity of crystal structures of inorganic compounds (review). Journal of Structural Chemistry, 64, 1797–2028.CrossRefGoogle Scholar
Bamberger, C.E., Begun, G.M. and MacDougall, C.S. (1990) Raman spectroscopy of potassium titanates: Their synthesis, hydrolytic reactions and thermal stability. Applied Spectroscopy, 44, 31–37.CrossRefGoogle Scholar
Bosi, F., Hatert, F., Halenius, U., Pasero, M., Ritsuro, M. and Mills, S.J. (2019) On the application of the IMA-CNMNC dominant-valency rule to complex mineral compositions. Mineralogical Magazine, 83, 627–632.CrossRefGoogle Scholar
Bosi, F., Hatert, F., Pasero, M. and Mills, S.J. (2023) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC)-Newsletter 76, IMA no. 2023-065. European Journal of Mineralogy, 35, 1073–1078.Google Scholar
Demartin, F., Pilati, T., Gay, H.D. and Gramaccioli, C.M. (1993) The crystal structure of a mineral related to paulkerrite. Zeitschrift fur Kristallographie, 208, 57–71.Google Scholar
Demartin, F., Gay, H.D. Gramaccioli, C.M. and Pilati, T. (1997) Benyacarite, a new titanium-bearing phosphate mineral species from Cerro Blanco, Argentina. The Canadian Mineralogist, 35, 707–712.Google Scholar
Dowty, E. (2004) ATOMS for Windows, vsn 6.1. Shape Software.Google Scholar
Fransolet, A.-M., Oustriere, P., Fontan, F. and Pillard, F. (1984) La mantiennéite, une novelle espèce minérale du gisement de vivianite d'Anloua, Cameroun. Bulletin de Mineralogie, 107, 737–744.CrossRefGoogle Scholar
Gagné, O.C. and Hawthorne, F.C. (2015) Comprehensive derivation of bond-valence parameters for ion pairs involving oxygen. Acta Crystallographica, B71, 562–578.Google Scholar
Grey, I.E., Boer, S., MacRae, C.M., Wilson, N.C., Mumme, W.G. and Bosi, F. (2023a) Crystal chemistry of type paulkerrite and establishment of the paulkerrite group nomenclature. European Journal of Mineralogy, 35, 909–919.CrossRefGoogle Scholar
Grey, I.E., Hochleitner, R., Kampf, A.R., Boer, S., MacRae, C.M., Mumme, W.G. and Keck, E. (2023b) Rewitzerite, K(H2O)Mn2(Al2Ti)(PO4)4[O(OH)](H2O)10⋅4H2O, a new monoclinic paulkerrite-group mineral, from the Hagendorf Süd pegmatite, Oberpfalz, Bavaria, Germany. Mineralogical Magazine, 87, 830–838.CrossRefGoogle Scholar
Grey, I.E., Hochleitner, R., Rewitzer, C., Kampf, A.R., MacRae, C.M., Gable, R.W., Mumme, W.G., Keck, E. and Davidson, C. (2023c) Pleysteinite, (H2O)0.5K0.5]2Mn2Al3(PO4)4F2(H2O)10⋅4H2O, the Al analogue of benyacarite, from the Hagendorf Sud pegmatite, Oberpfalz, Bavaria, Germany. European Journal of Mineralogy, 35, 189–197.CrossRefGoogle Scholar
Grey, I.E., Keck, E., Kampf, A.R., MacRae, C.M., Gable, R.W., Mumme, W.G., Glenn, A.M. and Davidson, C. (2023d) Hochleitnerite, [K(H2O)]Mn2(Ti2Fe)(PO4)4O2(H2O)10⋅4H2O, a new paulkerrite-group mineral, from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, Germany. European Journal of Mineralogy, 35, 635–643.CrossRefGoogle Scholar
Hatert, F. and Burke, E.A.J. (2008) The IMA–CNMNC dominant-constituent rule revisited and extended. The Canadian Mineralogist, 46, 717–728.CrossRefGoogle Scholar
Hawthorne, F.C. (1985) Towards a structural classification of minerals: The viMivT2Φn minerals. American Mineralogist, 70, 455– 473.Google Scholar
Hochleitner, R., Rewitzer, C., Grey, I.E., Kampf, A.R., MacRae, C.M., Gable, R.W. and Mumme, W.G. (2024) Hydroxylbenyacarite, IMA 2023-079. CNMNC Newsletter 76. Mineralogical Magazine, 88, https://doi.org/10.1180/mgm.2023.89Google Scholar
Mandarino, J.A. (1981) The Gladstone-Dale relationship: Part IV. The compatibility concept and its application. The Canadian Mineralogist, 19 441–450.Google Scholar
Moore, P.B. (1970) Crystal chemistry of the basic iron phosphates. American Mineralogist, 55, 135–169.Google Scholar
Peacor, D.R., Dunn, P.J. and Simmons, W.B. (1984) Paulkerrite a new titanium phosphate from Arizona. The Mineralogical Record, 15, 303–306.Google Scholar
Petříček, V., Dušek, M. and Palatinus, L. (2014) Crystallographic Computing System JANA2006: General features. Zeitschrift fur Kristallographie, 229, 345–352.Google Scholar
Rewitzer, C., Hochleitner, R., Grey, I.E., Macrae, C.M., Mumme, W.G., Boer, S., Kampf, A.R. and Gable, R.W. (2024) Monoclinic pleysteinite and hochleitnerite from the Hagendorf Sud pegmatite. The Canadian Journal of Mineralogy and Petrology, 62. https://doi.org/103749/2400003Google Scholar
Rigaku, OD (2022) CrysAlisPro 1.171.42.72a. Rigaku Oxford Diffraction, UK.Google Scholar
Sheldrick, G.M. (2015) Crystal-structure refinement with SHELX. Acta Crystallographica, C71, 3–8.Google Scholar
Silva, F.L.R., Filho, A.A.A., Silva, M.B., Balzuweit, K., Bantiignies, J-L., Caetano, E.W.S., Moreira, R.L., Freire, V.N. and Righi, A. (2018) Polarized Raman, FTIR, and DFT study of Na2Ti3O7 microcrystals. Journal of Raman Spectroscopy, 49, 535–548.CrossRefGoogle Scholar
Tu, C.-S., Guo, A.R., Tao, R., Katiyar, R.S., Guo, R. and Bhalla, A.S. (1996) Temperature dependent Raman scattering in KTiOPO4 and KTiOAsO4 single crystals. Journal of Applied Physics, 79, 3235–3240.CrossRefGoogle Scholar
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